摘要
根据超声波测距的原理,利用回波时间差来测量待测距离,并设计了超声波测距系统的软硬件。在此基础上,提出了对传感器采集到的微弱信号进行时域累加平均和小波变换中的多分辨率分析方法相结合去噪。实践证明,系统极具实用价值。
According to the principle of uhrasornic ranging, and the time difference of the echo is used to measure the DUT distance, the system completes the hardware and software system design of distancemeasurement of ultrasonic. The method that combine the cumulative average and multi-resolution analysis in wavelet transform was presented which can de-noise the weak signal collected from the sensor.The practice has proved that this system had great practical value.
出处
《煤矿机械》
北大核心
2010年第11期165-167,共3页
Coal Mine Machinery
关键词
超声波
传感器
累加平均
小波多分辨率分析
去噪
uhrasornic
sensor
cumulative average
wavelet multi-resolution analysis
de-noising
作者简介
汪青（1986-），女，安徽巢湖人，安徽理工大学在读研究生，研究方向为电路与系统，电子信箱：xiaoqing5921@126．com．
